Re: [castor-user] [XML] "Unable to resolve reference" to value of MapItem

[Ralf Joachim]

Hi Matthew,

have you had a look at:

http://castor.codehaus.org/how-to-map-a-hashtable.html

Regards
Ralf

Matthew Wilson schrieb:

Hi,
I am trying to unmarshall a Map called "class mappings" in which the
keys are Strings and the values are references to objects of type
QoSClass which are specified in the same instance document.  The
relevant parts of the mapping file and instance document are shown
below. I have tried many different permutations such as making the
MapItem value field an entity, setting it's type to java.lang.Object and
using xsi:type, but all produce exceptions similar to following:

 unable to resolve reference: besteffort{File: [not available]; line:
70; column: 30}
        at org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:740)
        at org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:596)
        at
uk.ac.soton.ecs.mpw104.main.tests.XMLRuleConfigTest.<init>(XMLRuleConfigTest.java:35)
        at
uk.ac.soton.ecs.mpw104.main.tests.XMLRuleConfigTest.main(XMLRuleConfigTest.java:54)
Caused by: 1. ValidationException: unable to resolve reference:
besteffort

I have probably made a silly mistake - could someone point it out for me
please?

Thanks in advance
Matthew Wilson.

Mapping file:

<class name="uk.ac.soton.ecs.mpw104.actions.QoS.QoSNode"
identity="name">
        <field name="children"
type="uk.ac.soton.ecs.mpw104.actions.QoS.QoSNode"
collection="arraylist" set-method="addChild">
                <bind-xml auto-naming="deriveByClass" node="element" 
required="true"/>
        </field>
        <field name="name" type="java.lang.String">
                <bind-xml name="id" node="attribute"/>
        </field>
        <!-- other stuff here -->
</class>

<class name="uk.ac.soton.ecs.mpw104.actions.QoS.QosFlowAction">
        <field name="rootNode"
type="uk.ac.soton.ecs.mpw104.actions.QoS.QoSQdisc">
                <bind-xml name="root" node="element"/>
        </field>
        <field name="classMappings" collection="map">
                <bind-xml name="classify">
                        <class name="org.exolab.castor.mapping.MapItem">

<field name="key" type="java.lang.String"> <bind-xml name="classification" node="attribute"/>

                                </field>
                                <field name="value"

type="uk.ac.soton.ecs.mpw104.actions.QoS.QoSClass"> <bind-xml name="trafficclass" reference="true"

node="attribute"/>
                                </field>
                           </class>
                </bind-xml>
         </field>

</class>

<class name="uk.ac.soton.ecs.mpw104.actions.QoS.QoSClass"
extends="uk.ac.soton.ecs.mpw104.actions.QoS.QoSNode">
<map-to xml="class"/>
</class>

Instance document:
<Action
xsi:type="java:uk.ac.soton.ecs.mpw104.actions.QoS.QosFlowAction">
    <root dev="eth0" type="htb">
        <parameter name="default" value="30"/>
        <class type="htb">

<class type="htb" id="besteffort">

                        <!-- stuff here -->
                </class>
        </class>
    </root>
   <classify classification="BULK" trafficclass="besteffort"/>

Java declarations:

public class QosFlowAction extends OutputAction {
    protected Map<String,QoSClass> classMappings;
   // Other fields here
    public QosFlowAction() {
        classMappings = new HashMap<String,QoSClass>();
    }

    public Map<String, QoSClass> getClassMappings() {
        return classMappings;
    }

    public void setClassMappings(Map<String, QoSClass> classMappings) {
        this.classMappings = classMappings;
    }
    // other methods here
}

public abstract class QoSNode implements Scriptable {
    // other fields here
    protected String name;

public QoSNode() {

        children = new LinkedList<QoSNode>();
        parameters = new HashMap<String,String>();
    }
   // other stuff here
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}
public class QoSClass extends QoSNode {
// no other useful stuff in here
}


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